Shuttle.



L. C. BALDWIN.

SHUTTLE.

APPLlcAnoN man r11/111.6, 1915.

Lmm. Patented Jan.16,1917.

1 1n1111.111mwwwmm narran srarras rarniar orar-rieno LUTHER C. BALDWIN, 0F PROVIDENCE, REODE ISLAND, ASSIGNR T0 U. S. BOBBIN t SHUTTLE COMPANY, OF PROVIDENCE, RHODE ISLAND, A CORPORATION OF NEW JERSEY.

SHUTTLE.

Specification of Letters Patent.

Patented Jair. le, 1921i 7.,

To all whom it may concern f Be it known that l, Lum-IER C. BALDwlN, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented a new and useful improvement in Shuttles, of which the following is a specifica-` tion.

This invention relates to certain new and useful improvements in shuttles and pertains more particularly to a bobbin gripping device for the shuttle.

The primary object of the invention is to provide a bobbin gripping device the use of which permits practically the full strength of the wood of the shuttle to be retained, as distinguished from gripping devices which in being incorporated in the shuttle necessitate cutting away of the wood of the shuttle to an extent which weakens the shuttle.

Further, the invention aims to provide a gripping device which may be drop forged so as to thereby possess increased strength and retention of elasticity in excess of gripping devices otherwise formed or made.

Still further, the invention aims to provide a gripping device which possesses minimum of parts, easily manufactured and assembled, to enable the device to be secured with the use of but one screw or bolt, and to necessitate the boring of but two holes in the shuttle for securement of the device.

In the drawings, Figure l is a fragmentary top plan View of 'a shuttle with the present invention applied thereto. VFig. 2 is a section on the line 2-2 of Fig. l. Fig. 3 is a section on the line 3-8 of Fig. f2. Fig. -i is a top plan detail view of the guide member, and Fig. is a detail perspective view of one of the jaws.

The guide consists of a stem l of cylindrical form, or of the shape of a round rod, to which is attached atthe front end of the stem, a metal plate shaped to form an inclined nose or guide proper 2, and a base member 8 the sides of which project beyond the respective sides of the stem. The jaws are similar in form and each comprises a shank il of substantially concavoconvex cross-section to receive the stem therebetween as depicted in Fig. 3, the shanks being bent or curved at 5 and having the jaw proper terminals 6.

The shuttle is provided with a bored hole 7 in which is received the shanks land stem 1, and is further provided with a bored hole 8 which intersects hole 7. The stem l is also provided with a transverse hole 9 so that a bolt l0 may be passed through the holes 8 and 9, and through holes 11 in the jaws and secured by nut l2. rllhe hole 7 extends longitudinally of the shuttle and for a length sutiicient to receive the shanks 4, the Ilatter being of a length so as to be firmly held by the walls that the hole 7 forms. The bottom of the shuttle is cut away at 13, to receivethe base 3 of the guide 2, and the guide 2 has an out-turned upper end 14 which rests against the wall 15 of the shuttle, so as to thus provide a means'for supporting the guide at its upper end, and to also assist in holding the entire gripping device against movement.

In operation the shanks 4 are placed on opposite sides of the stem l with their holes 1l in register with the hole 9 of the stem, the lower edges of the jaws being supported on the extended sides of base 3 of the guide, whereupon the parts are slid into hole 7 and the bolt l() placed through the hole 8 and holes 9, ll, l1, and the nut 12 applied, whereby the entire structure is secured in a rigid and effective manner. It will be seen that since the jaws are separate and independent of one another, same may be drop forged with the result that they are possessed of increased strength and retain theirl elasticity to an extent in excess of that possessed by jaws otherwise formed. Since the jaws rest on the base 3 they are supported by the latter, and the base 3 in turn is prevented from moving downwardly by contacting with the wall formed by cutout 123 of the shuttle.

The two holes 7 and S are the only holes which the shuttle possesses, consequently full strength of the shuttle is retained.

Having thus described my invention, wh at I claim as new and desire to secure by Letters Patent is- 1. In combination with a shuttle having a longitudinal hole and a cross hole intersecting the first hole, a stem, a guide secured to the front end of the stem and having an inclined part, the top end of which is turned outwardly to engage the shuttle and having a base which underlies the stem and extends on opposite sides thereof, a pair of separate jaws having coneavo-convex shanks engaged on opposite sides of the stem and in said longitudinal hole and seating on the side portions of the base of the guide, said jaw shanks and stein having registering openings whieh aline with the cross hole, and a bolt passed through said registering openings and cross hole.

2. In combination with a shuttle having a longitudinal opening, a stein having a guide, a pairA of jaws havin-g conoavo-conveX shanks engaged on opposite sides of the stern, and means to secure the parts in the shuttle opening extending through the shanks, stem, and shuttle.

3. In combination with a shuttle having a longitudinal round opening, a stern, and a pair of jaws having shanks which Conforinably it over said stein, said jaws when engaged with said stem having a substantially circular Cross-section so as to be capable of being driven in the opening.

4. In combination with a shuttle having a longitudinal opening, a stem, and a pair of jaws havin-0` shanks which latter it over said stem andD have free side edges which confront each other, the stein and shanks being received in said opening.

5. In combination with a shuttle having a longitudinal opening, a steln, and a pair of jaws having shanks which latter fit over said stein so as to substantially inclose the entire periphery thereof and being received in said opening.

G. In combination with a shuttle having a bored opening, a steln, and jaws engaged over the stein and formed so as to bo capable of being driven into the opening with the stern.

7. In combination with a shuttle having a bored opening, a stein, and jaws engaged with the stein and with the latter received in the opening so as to be held by the walls deiining the opening.

In testimony whereof I have signed niv naine to this speciication in the presence oi two subscribing witnesses.

j LUTHER C. B ALDWIN. Witnesses ADA E. HAGERTY, J. A. MILLER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, D. C." 

